Question

Give The I.U.P.A.C Name of the complex Salt K3[Fe(CN)6-]. Calculate the Effective Atomic No. (EAN) of Fe in this complex Salt.

Answer 1

Answer:

IUPAC name is potassium hexacyanoferrate(III).

EAN is 35.

Explanation:

Find the explanation in the attachment.

Answer 2

The I.U.P.A.C Name of the complex Salt K3[Fe(CN)6-] and the Effective Atomic No. (EAN) of Fe in this complex Salt is calculated below:

IUPAC NAME OF K3[Fe(CN)6-] is:

• Potassium hexacyanoferrate(III). here, (III) is because Fe is in a +3 oxidation state.
• The complex,k3+[Fe(CN)6-]3- is anionic then the name of metal ends with ate such as ferrate, plumbate etc.
• If the complex is anionic then cation outside the complex is written first in the naming.
• So, the IUPAC name of the complex is Potassium hexacyanoferrate(III).
• The oxidation state of Fe(x ) = x-6 = -3, x=-3+6 = 3.

Effective Atomic No. (EAN) OF Fe In K3[Fe(CN)6-] is:

• EAN = atomic number of metal + electron donated by ligand + anionic charge + cationic charge.
• K3[Fe(CN)6-] can be written as [Fe(CN)6-]3- because 3K+ neutralising 3- of the complex.
• So, EAN = 26+6+3 = 36.